Overhead transmission line tower aerial work platform extension device

Abstract

The application provides an overhead transmission line tower aerial work platform extension device for use with a tower, and relates to the field of maintenance equipment, comprising a plurality of connecting rods, two folding frames and a flexible laying panel, the plurality of connecting rods are simultaneously connected to the two folding frames, each folding frame has an unfolded state and a folded state which are switchable; the flexible laying panel is wound on the connecting rods, and the flexible laying panel is used for laying on the plurality of connecting rods when the two folding frames are in the unfolded state. The device can improve the safety of workers working in the high-altitude environment, and also improve the work efficiency of the workers.

Description

Technical Field

[0001] This invention relates to the field of maintenance equipment, and more specifically, to an extension device for an aerial work platform for overhead power transmission line towers. Background Technology

[0002] Currently, overhead power transmission line towers are widely used. During the maintenance and repair of these towers, due to their high-altitude location, operators must perform maintenance work at height. This means workers need to climb to the work site, stand with their legs dangling in the air on the angle iron of the overhead power transmission tower, and work at height. Due to these limitations, workers must expend a great deal of physical strength to maintain their balance, resulting in high labor intensity, low efficiency, and high risk. Summary of the Invention

[0003] The purpose of this invention is to provide an extension device for an aerial work platform on an overhead power transmission line tower, which can improve the safety of workers operating in high-altitude environments and also improve their work efficiency.

[0004] The embodiments of the present invention are implemented as follows:

[0005] This invention provides an extension device for an aerial work platform on an overhead transmission line tower, used in conjunction with the tower, comprising:

[0006] The system comprises multiple connecting rods, two folding frames, and a flexible laying panel. The multiple connecting rods are simultaneously connected to the two folding frames, and each folding frame has an unfolded state and a folded state that can be switched between each other. The flexible laying panel is wrapped around the connecting rods and is used to lay on the multiple connecting rods when both folding frames are in the unfolded state.

[0007] In an optional embodiment, the folding frame includes multiple rotating units arranged side by side. Each rotating unit includes a rotating shaft, a first support arm, and a second support arm. The first support arm and the second support arm are arranged crosswise and are rotatably connected to the rotating shaft. The first support arm and the second support arm of adjacent rotating units are rotatably connected. The two ends of the connecting rod are respectively connected to two opposite first support arms or two opposite second support arms of the two folding frames.

[0008] In an optional embodiment, the first support arm or the second support arm is provided with a snap-fit ​​component, which has a slot for engaging with the angle steel on the tower.

[0009] In an optional embodiment, the multiple connecting rods include a first side rod and a second side rod located on two sides of the folding frame, a first side of the flexible laying panel is connected to the first side rod and can be wound around the first side rod; and a second side of the flexible laying panel opposite to the first side is detachably connected to the second side rod.

[0010] In an optional embodiment, the first side bar is fitted with a sleeve, the sleeve is rotatably connected to the first side bar, and the first side of the flexible laying panel is fixedly connected to the sleeve and can be wrapped around the sleeve.

[0011] In an optional embodiment, a limiting disc is also sleeved on the first side rod, and the limiting disc is fixed relative to the first side rod in the circumferential direction of the first side rod; the limiting disc is provided with a limiting pin that is slidably connected to the limiting disc in the axial direction of the first side rod; the end face of the sleeve is provided with a plurality of limiting holes arranged at intervals in the circumferential direction of the sleeve, and the limiting pin is used to insert into one of the plurality of limiting holes.

[0012] In an optional embodiment, a hook is provided on the second side of the flexible laying panel, the hook being used to engage with the second side bar to restrict the movement of the second side of the flexible laying panel toward the first side bar.

[0013] In an optional embodiment, the limiting hole includes a connected guide hole section and a positioning hole section, the cross-sectional area of ​​the guide hole section gradually increases from one end near the positioning hole section to the other end, and the positioning hole section is configured as a constant diameter hole section; the guide hole section is used to guide the limiting pin to be inserted into the positioning hole section.

[0014] In an optional embodiment, the limiting pin is threadedly connected to the limiting disc, and the end of the limiting pin is provided with a ball that is rolledly connected to the limiting pin, the ball being used to abut against the wall of the guide hole section.

[0015] In an optional embodiment, the connecting rod is provided with a sliding hole, and an adjusting rod is slidably inserted through the sliding hole. The end of the adjusting rod is provided with a rubber magnet, which is used to magnetically attach to the flexible laying panel laid on the multiple connecting rods.

[0016] The beneficial effects of the embodiments of the present invention are:

[0017] In summary, the overhead transmission line tower high-altitude work platform extension device provided in this embodiment is initially folded and hoisted to the required work position using ropes. Then, the two folding frames are opened, and one side of each frame is secured to the tower, thus positioning the folding frames using the tower. After positioning, the multiple connecting rods on the folding frames are roughly horizontally arranged. The flexible laying panel is then unfolded and laid on the connecting rods, filling the gaps between adjacent connecting rods. Workers can stand on the platform formed by the connecting rods and the flexible laying panel, suspended by safety ropes. This provides workers with a point of leverage, facilitating balance, reducing physical exertion, and improving coordination during operation, thereby enhancing both safety and efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the overhead transmission line tower high-altitude work platform extension device according to an embodiment of the present invention;

[0020] Figure 2 This is a partial structural schematic diagram of the overhead transmission line tower high-altitude work platform extension device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram illustrating the cooperation of the first side rod, sleeve, and limiting plate in an embodiment of the present invention.

[0022] icon:

[0023] 001-Iron tower; 002-Angle steel; 100-Connecting rod; 110-First side rod; 120-Second side rod; 200-Folding frame; 210-Spindle; 220-First support arm; 230-Second support arm; 240-Snap-fit ​​component; 300-Flexible laying panel; 310-Hook; 400-Sleeve; 410-Limiting hole; 411-Guide hole section; 412-Positioning hole section; 500-Limiting plate; 600-Limiting pin; 700-Adjusting rod; 710-Rubber magnet. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Currently, when performing high-altitude work on overhead transmission line tower 001, workers climb to a designated position, put on safety harnesses, and then begin work. This process is inconvenient for workers to adjust their position, is physically demanding, and not only results in low work efficiency but also poses significant safety hazards.

[0031] In view of this, the designers have designed an extension device for an aerial work platform for overhead transmission line towers. It can work with the tower 001 at a set position to form a work platform. Workers can walk on the work platform to carry out inspection or maintenance work. The position adjustment of workers is convenient and flexible, with low labor intensity, high efficiency and high safety.

[0032] Please combine Figure 1 In this embodiment, the overhead transmission line tower high-altitude work platform extension device includes multiple connecting rods 100, two folding frames 200, and a flexible laying panel 300. The multiple connecting rods 100 are simultaneously connected to the two folding frames 200, and each folding frame 200 has an interchangeable unfolded and folded state. The flexible laying panel 300 is wound around the connecting rods 100 and is used to lay on the multiple connecting rods 100 when both folding frames 200 are in the unfolded state.

[0033] The working principle of the overhead transmission line tower high-altitude work platform extension device provided in this embodiment is as follows:

[0034] Before using the extension device, it is first folded up and hoisted to the required working position using ropes. Then, after the worker climbs to the corresponding position on tower 001 and puts on safety harnesses, the worker unfolds the two folding frames 200 and secures the same side of both folding frames 200 to the angle steel 002 of tower 001. In this way, tower 001 is used to position the two unfolded folding frames 200. The structure of the folding frames 200 is stable and can withstand sufficient weight. After positioning, the multiple connecting rods 100 on the folding frames 200 are roughly horizontally arranged. The flexible laying panel 300 is then unfolded and laid on the multiple connecting rods 100. The flexible laying panel 300 fills the gap between adjacent connecting rods 100. Workers can stand on the platform formed by the multiple connecting rods 100 and the flexible laying panel 300 with the safety rope suspended on it. In this way, workers have a point of leverage, which makes it easier to maintain their balance, reduces physical exertion, improves body coordination during operation, and makes it easier to adjust their position. This improves both safety and efficiency during operation.

[0035] It should be understood that the flexible laying panel 300 is initially wrapped around the connecting rod 100 located on the side. The flexible laying panel 300 is small in size and does not easily affect the unfolding operation of the folding frame 200. It should be noted that the flexible laying panel 300 is set as a rubber pad, which has a certain degree of deformation capability, allowing it to be wrapped around the connecting rod 100. After being unfolded, it also has a certain degree of strength and is not easy to collapse. When workers stand on the flexible laying panel 300, they can obtain better support feedback, improving safety.

[0036] In this embodiment, it should be noted that the structures of the two folding frames 200 can be set to be the same. In order to avoid repetition and redundancy, this embodiment will use the structure of one folding frame 200 as an example for specific explanation.

[0037] Please combine Figure 1 The folding frame 200 includes multiple rotating units arranged side by side. The number of rotating units is set as needed; for example, in this embodiment, there are six rotating units. Each rotating unit includes a rotating shaft 210, a first support arm 220, and a second support arm 230. The first support arm 220 and the second support arm 230 are arranged crosswise and are rotatably connected to the rotating shaft 210. Specifically, a first mounting hole is provided at the middle position of the first support arm 220, and a second mounting hole is provided at the middle position of the second support arm 230. The first mounting hole and the second mounting hole are coaxial, and the rotating shaft 210 passes through both the first mounting hole and the second mounting hole. Furthermore, two bearings can be sleeved on the outside of the rotating shaft 210. The two bearings cooperate with the first mounting hole and the second mounting hole respectively, thereby improving the rotational flexibility of the first support arm 220 and the second support arm 230.

[0038] Meanwhile, the connection method of adjacent rotating units is consistent. In this embodiment, the connection of two adjacent rotating units is used as an example for explanation. The first support arm 220 of the first rotating unit and the second support arm 230 of the second rotating unit are rotatably connected, and the second support arm 230 of the first rotating unit is rotatably connected to the first support arm 220 of the second rotating unit. Furthermore, the first support arm 220 and the second support arm 230 of any two adjacent rotating units are rotatably connected by a connecting rod 100. In this way, the connecting rod 100 not only realizes the connection of the two folding frames 200, but also serves to connect adjacent rotating units.

[0039] Furthermore, a snap-fit ​​element 240 is provided on the first support arm 220 or the second support arm 230, and the snap-fit ​​element 240 is provided with a slot for engaging with the angle steel 002 on the tower 001. It should be noted that each folding frame 200 has a lower side and an upper side, and the snap-fit ​​element 240 is located on the lower side of the folding frame 200. In addition, a snap-fit ​​element 240 can be provided at the connection position of the first support arm 220 and the second support arm 230 of the adjacent rotating unit. This snap-fit ​​element 240 can be directly fixed to the corresponding connecting rod 100. In this way, the position of the connecting rod 100 is positioned by the snap-fit ​​element 240. When the folding frame 200 is unfolded, the distance between adjacent connecting rods 100 gradually increases. When the position of the connecting rod 100 is positioned by the angle steel 002, the folding frame 200 cannot continue to unfold. The folding frame 200 can always maintain the unfolded state and the structure is stable and reliable.

[0040] It should be noted that the snap-fit ​​part 240 can be directly welded to the connecting rod 100 located on the lower side of the folding frame 200.

[0041] Please combine Figure 2 and Figure 3 It should be noted that the multiple connecting rods 100 are arranged sequentially along the length or telescopic direction of the folding frame 200. The two outermost connecting rods 100 are the first side rod 110 and the second side rod 120, respectively. For example... Figure 2From the shown perspective, the first side rod 110 is located on the left, and the second side rod 120 is located on the right. A sleeve 400 and a limiting disc 500 are fitted onto the first side rod 110. The sleeve 400 is rotatably connected to the first side rod 110 via a bearing. The sleeve 400 and the limiting disc 500 are spaced apart axially in the first side rod 110. Multiple limiting holes 410 are provided on the end face of the sleeve 400 near the limiting disc 500, and these holes are evenly spaced circumferentially around the sleeve 400. Furthermore, the limiting hole 410 is designed as a two-section structure, comprising a connecting guide hole section 411 and a positioning hole section 412. The guide hole section 411 is a variable diameter section with a circular cross-section, and its cross-sectional area gradually increases from the end near the positioning hole section 412 to the other end. The positioning hole section 412 is set as a constant diameter hole section, and the cross-sectional profile of the positioning hole section 412 is circular. The limiting plate 500 is fixedly connected to the first side rod 110. For example, the limiting plate 500 can be welded to the outside of the first side rod 110. The limiting plate 500 and the first side rod 110 are relatively fixed in both the axial and circumferential directions of the first side rod 110. A slidable limiting pin 600 is provided on the limiting plate 500. The limiting pin 600 can slide back and forth in the length direction of the first side rod 110. For example, the limiting pin 600 can be screwed onto the limiting plate 500. By rotating the limiting pin 600, the position of the limiting pin 600 on the limiting plate 500 can be adjusted. The screwed connection structure has a self-locking function to prevent the limiting pin 600 from coming out of the limiting hole 410, making it safer to use. The guide hole section 411 is used to guide the limit pin 600 into the positioning hole section 412. By setting the guide hole section 411, it is easy for the limit pin 600 to be inserted into the positioning hole section 412 to position the sleeve 400 and prevent it from rotating.

[0042] The flexible laying panel 300 has a first side and a second side along its length. The first side is fixedly connected to the sleeve 400, and the flexible laying panel 300 can be wound around the sleeve 400 by rotating the sleeve 400. A hook 310 is provided on the second side, which is used to engage with the second side bar 120 after the flexible laying panel 300 is unfolded. After the expansion device is used, the hook 310 is removed from the second side bar 120, and then the sleeve 400 is rotated to retract the flexible laying panel 300. In actual use, after the folding frame 200 is unfolded, the flexible laying panel 300 is unwound from the first side bar 110. The sleeve 400 is set to rotate in the first direction when the flexible laying panel 300 is unwound. When rotated to a suitable position, the hook 310 engages with the second side bar 120, and the flexible laying panel 300 is approximately taut. Furthermore, the positioning hole section 412 for engaging with the limiting pin 600 is located in front of the limiting pin 600 in the first direction, and the limiting pin 600 and the positioning hole section 412 are eccentrically positioned. At this time, when the limiting pin 600 is rotated, the limiting pin 600 first abuts against the hole wall of the guide hole section 411. As the insertion depth of the limiting pin 600 increases, the limiting pin 600 drives the sleeve 400 to rotate at a set angle in the second direction opposite to the first direction, which can further straighten the flexible laying panel 300, so that the hook 310 can be better engaged on the second side rod 120, thereby improving the stability of the flexible laying panel 300.

[0043] Furthermore, a ball can be provided on the limit pin 600. The ball can be a steel ball and rolls with the limit pin 600. The ball is used to abut against the hole wall of the guide hole section 411 to reduce friction.

[0044] Please combine Figure 3 In this embodiment, optionally, the connecting rod 100 is also provided with a sliding hole, and an adjusting rod 700 is slidably inserted into the sliding hole. A rubber magnet 710 is provided on the adjusting rod 700. When the flexible laying panel 300 is unfolded onto the multiple connecting rods 100, the adjusting rod 700 is pushed upwards, causing the flexible laying panel 300 to attract the rubber magnet 710, further improving the stability of the flexible laying panel 300. For example, the adjusting rod 700 can be threadedly connected to the sliding hole.

[0045] The overhead transmission line tower high-altitude work platform extension device provided in this embodiment, used in conjunction with the angle steel 002 of the tower 001, can be stably erected on the tower 001, providing convenience for workers to work at heights, improving work efficiency, and also enhancing work safety.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An extension device for an aerial work platform on an overhead transmission line tower, used in conjunction with the tower, characterized in that, include: The system comprises multiple connecting rods, two folding frames, and a flexible laying panel. The multiple connecting rods are simultaneously connected to the two folding frames, and each folding frame has an unfolded state and a folded state that can be switched between each other. The flexible laying panel is wrapped around the connecting rods and is used to lay on the multiple connecting rods when both folding frames are in the unfolded state. The multiple connecting rods include a first side rod and a second side rod located on two sides of the folding frame. The first side of the flexible laying panel is connected to the first side rod and can be wrapped around the first side rod. The second side of the flexible laying panel opposite to the first side is detachably connected to the second side rod. The first side rod is fitted with a sleeve, which is rotatably connected to the first side rod. The first side of the flexible laying panel is fixedly connected to the sleeve and can be wrapped around the sleeve.

2. The extension device for high-altitude work platform of overhead transmission line towers according to claim 1, characterized in that: The folding frame includes multiple rotating units arranged side by side. Each rotating unit includes a rotating shaft, a first support arm, and a second support arm. The first support arm and the second support arm are arranged crosswise and are rotatably connected to the rotating shaft. The first support arm and the second support arm of adjacent rotating units are rotatably connected. The two ends of the connecting rod are respectively connected to two opposite first support arms or two opposite second support arms of the two folding frames.

3. The extension device for high-altitude work platform of overhead transmission line towers according to claim 2, characterized in that: The first support arm or the second support arm is provided with a snap-fit ​​component, which is provided with a slot for inserting and engaging with the angle steel on the tower.

4. The extension device for high-altitude work platform of overhead transmission line towers according to claim 1, characterized in that: A limiting disc is also sleeved on the first side rod, and the limiting disc is fixed relative to the first side rod in the circumferential direction of the first side rod; the limiting disc is provided with a limiting pin that is slidably connected to the limiting disc in the axial direction of the first side rod; the end face of the sleeve is provided with a plurality of limiting holes arranged at intervals in the circumferential direction of the sleeve, and the limiting pin is used to insert into one of the plurality of limiting holes.

5. The overhead transmission line tower high-altitude work platform extension device according to claim 4, characterized in that: A hook is provided on the second side of the flexible paving panel. The hook is used to engage with the second side bar to restrict the movement of the second side of the flexible paving panel toward the first side bar.

6. The extension device for high-altitude work platform of overhead transmission line towers according to claim 5, characterized in that: The limiting hole includes a connected guide hole section and a positioning hole section. The cross-sectional area of ​​the guide hole section gradually increases from one end near the positioning hole section to the other end. The positioning hole section is set as a constant diameter hole section. The guide hole section is used to guide the limiting pin to be inserted into the positioning hole section.

7. The overhead transmission line tower high-altitude work platform extension device according to claim 6, characterized in that: The limiting pin is threadedly connected to the limiting disc, and the end of the limiting pin is provided with a ball that is rolledly connected to the limiting pin. The ball is used to abut against the wall of the guide hole section.

8. The extension device for high-altitude work platform of overhead transmission line towers according to claim 1, characterized in that: The connecting rod is provided with a sliding hole, and an adjusting rod is slidably inserted into the sliding hole. The end of the adjusting rod is provided with a rubber magnet, which is used to magnetically attach to the flexible laying panel laid on the multiple connecting rods.

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